He who fears dangers will not perish by them.

Just as iron rusts from disuse, and stagnant water putrefies, or when cold turns to ice, so our intellect wastes unless it is kept in use.

I wish to work miracles.

If you throw a stone in a pond... the waves which strike against the shores are thrown back towards the spot where the stone struck; and on meeting other waves they never intercept each other's course... In a small pond one and the same stroke gives birth to many motions of advance and recoil.

The eye - which sees all objects reversed - retains the images for some time.

The painter has the Universe in his mind and hands.

Fire destroys falsehood, that is sophistry, and restores truth, driving out darkness.