Every society gets encumbered with what is trivial, with dead wood from the past, and with what is positively perverse.

Teaching can be compared to selling commodities. No one can sell unless someone buys ... yet there are teachers who think they have done a good day's teaching irrespective of what the pupils have learned.

Man's home is nature; his purposes and aims are dependent for execution upon natural conditions. Separated from such conditions they become empty dreams and idle indulgences of fancy.

In laying hands upon the sacred ark of absolute permanency, in treating the forms that had been regarded as types of fixity and perfection as originating and passing away, the Origin of Species introduced a mode of thinking that in the end was bound to transform the logic of knowledge, and hence the treatment of morals, politics, and religion.

Thinking is the accurate and deliberate instituting of connections between what is done and its consequences.

The interaction of knowledge and skills with experience is key to learning.

Always make the other person feel important.