Play is the work of the child.

We teachers can only help the work going on, as servants wait upon a master.

No social problem is as universal as the oppression of the child

Of all things love is the most potent.

What is a scientist?... We give the name scientist to the type of man who has felt experiment to be a means guiding him to search out the deep truth of life, to lift a veil from its fascinating secrets, and who, in this pursuit, has felt arising within him a love for the mysteries of nature, so passionate as to annihilate the thought of himself.

Culture and education have no bounds or limits; now man is in a phase in which he must decide for himself how far he can proceed in the culture that belongs to the whole of humanity.

Never help a child with a task at which he feels he can succeed.