Best opening for white

At the moment I play the King's Indian Attack as white. What other openings can be potentially very agressive when playing as white?

Stonewall Attack?

Just play e4 and d4

Yes

Thanks.

try the Queens Gambit

Hi how am I supposed to post a game in this forum?

@Fiveofswords. The KIA is very agressive indeed. I know Fischer isn't the greatest player, but he did at least show how the KIA can be played very agressively. 

Agressive - "ready or likely to attack". White's plan in the KIA is a direct attack against black's kingside castled king. Heck, the word 'attack' is even in the title of the opening. Your posts can't possibly be serious. And it's not the fact of Fischer's playing it that's important, it's the way he played it: aggressively! 

The best opening for White is by no means other than the Scholar's Mate.

@Glex - Good point! Very aggressive! 

1.f3 e6 2.g4 Qh4#

This opening is the reason why Carlsen won't play against me . He just doesn't know how to counter the Scholar's Mate.

Attack is in it's name because it is played by white and somehow we have to make the difference between the KIA and the KID. But it isn't an "attack". It's just a passive but somewhat flexible setup for white.

Just because your plan is to attack on the kingside it doesn't mean it's an aggressive opening. I wouldn't call the french defense aggressive from white's point of view for example.

And every sound opening can be played aggressively. Being aggressive doesn't depend on the opening, it depends on the player who plays it. The caro-kann can be played aggressively, the sicilian can be played passively.

No. Some openings are single-mindedly aggressive, others are not. 

IIRC that Fischer game you're alluding to was in the French line where Black plays ...b5, ...a5, ...a4, etc. and meanwhile White blows up the Kingside. While the "specialized" KIA approach of playing 1 e4 and only going d2-d3 when Black commits to ...e6 can be rather agressive, the "universal" KIA (1 Nf3, etc.) which is presumably what is under discussion is in general rather positional. Even in the "specialized" KIA, Black has a few ways to kill White's enthusiasm, i.e. 1 e4 e6 2 d3 d5 3 Nd2 Nf6 4 Ngf3 Nc6!? and ...e5 or even 4...Bc5!? when White's best is 5 d4, transposing to a Tarrasch.

Name an opening that can't be played agressively.

@MainlineNovelty - you've clearly not studied logic. I'm saying that some openings are inherently aggressive. Even if there were no openings that can't be played aggressively that wouldn't count against the claim I made. For a chessplayer, never having studied logic is rather worrying. I believe there are some excellent online courses available, Coursera for example offers a range of courses in philosophy for the excellent price of nothing. 

Equally, the fact that an opening can be 'diffused' doesn't stop it from being aggressive. Glex's point above is a nice illustration of this. Scholar's mate (or the opening which attempts to achieve it) is clearly very aggressive, though not difficult to counter. 

That's the best opening for Black. It's two moves shorter. Who said White had a first move advantage must clearly play worse openings.

@ Glex - I think you're my hero: you're like a cross between Gandalf and Yoda.