We enter the world alone, we leave it alone.
Human improvement is from within outward.
To tell men that they cannot help themselves is to fling them into recklessness and despair.
Where nature is sovereign, there is no need of austerity and self-denial.
Every one of us ... knows better than he practices, and recognizes a better law than he obeys.
Philosophy goes no further than probabilities, and in every assertion keeps a doubt in reserve.