Every step of life shows much caution is required. Johann Von Goethe
The bird alighteth not on the spread net when it beholds another bird in the snare. Take warning by the misfortunes of others, that others may not take example from you. Saadi
It is a good thing to learn caution by the misfortunes of others. Publilius Syrus
Caution is the confidential agent of selfishness. Woodrow Wilson