He that hath wife and children hath given hostages to fortune; for they are impediments to great enterprises, either of virtue or mischief.
It is impossible to love and to be wise.
Acorns were good until bread was found.
Wives are young men's mistresses, companions for middle age, and old men's nurses.
Men on their side must force themselves for a while to lay their notions by and begin to familiarize themselves with facts.
Observation and experiment for gathering material, induction and deduction for elaborating it: these are are only good intellectual tools.