If you would live long, open your heart.

Bulgarian saying

El que se apresura por la vida, corre a la tumba.

George R. Martín

Draw not your bow till your arrow is fixed.

Russian proverb

The liar's punishment is that even when he speaks the truth, no one believes him.

Sanhedrin 89b

Go wisely and slowly. Those who rush stumble and fall.

William Shakespeare

Pride is the chalice into which all human sins are poured: it glitters and jingles and its arabesque lures your gaze, while your lips involuntarily touch the seductive beverage.

Vladimir Odoevsky