The search for first causes is the ultimate wild goose chase.
Gravitation cannot be held responsible for people falling in love.
Love is a deep well from which you may drink often but into which you may fall but once.
First love is a kind of vaccination which saves a man from catching the complaint the second time.
Love is like war easy to begin but hard to end.
A youth with his first cigar makes himself sick a youth with his first girl makes everybody sick.