Let us permit nature to have her way. She understands her business better than we do.

For truly it is to be noted, that children's plays are not sports, and should be deemed as their most serious actions.

Even from their infancy we frame them to the sports of love: their instruction, behavior, attire, grace, learning and all their words azimuth only at love, respects only affection. Their nurses and their keepers imprint no other thing in them.

It is a sign of contraction of the mind when it is content, or of weariness. A spirited mind never stops within itself it is always aspiring and going beyond its strength.

I speak the truth not so much as I would, but as much as I dare, and I dare a little more as I grow older.

I put forward formless and unresolved notions, as do those who publish doubtful questions to debate in the schools, not to establish the truth but to seek it.

We can be knowledgable with other men's knowledge but we cannot be wise with other men's wisdom.

The most certain sign of wisdom is cheerfulness.

I write to keep from going mad from the contradictions I find among mankind - and to work some of those contradictions out for myself.