The painter who has no doubt about his own ability will attain very little.

Nature alone is the master of true genius.

Make your work to be in keeping with your purpose

If you put on more clothes as the cold increases, it will have no power to hurt you. Let us hope that.

I am not to blame for putting forward, in the course of my work on science, any general rule derived from a previous conclusion.

If you are on the side whence the wind is blowing you will see the trees looking much lighter than you would see them on the other sides; and this is due to the fact that the wind turns up the reverse side of the leaves which in all trees is much whiter than the upper side.

Be a mirror, absorb everything around you and still remain the same