Great thoughts and a pure heart, that is what we should ask from God.

My poor head is in such a whirl, my mind is all in bits.

Every day look at a beautiful picture, read a beautiful poem, listen to some beautiful music, and if possible, say some reasonable thing.

People of uncommon abilities generally fall into eccentricities when their sphere of life is not adequate to their abilities.

I have learned much from disease which life could have never taught me anywhere else.

Whether one show one's self a man of genius in science or compose a song, the only point is, whether the thought, the discovery, the deed, is living and can live on.

Most pioneers are at the mercy of doubt at the beginning, whether of their worth, of their theories, or of the whole enigmatic field in which they labour.