Inequality is the cause of all local movements.

The eye, the window of the soul, is the chief means whereby the understanding can most fully and abundantly appreciate the infinite works of Nature; and the ear is second.

He who truly knows has no occasion to shout.

It vexes me greatly that having to earn my living has forced me to interrupt the work and to attend to small matters.

There shall be wings! If the accomplishment be not for me, 'tis for some other. The spirit cannot die; and man, who shall know all and shall have wings.

Among the great things which are found among us the existence of Nothing is the greatest.

Even the richest soil, if left uncultivated will produce the rankest weeds.