The early bird catches the worm 早起的鸟有虫吃！

He was ahead of others because he believed the early bird catches the worm - A person who starts a project in a timely manner will have a better chance to accomplish his goal.

A bird in the hand is worth two in the bush. 一鸟在手总比双鸟在林好。

What you've already had is better than what you might get in the future. 现在拥有的要比将来可能得到的好。

Guarantee is worth more than a promise. 保证比承诺好。

I am dubious of his honesty, don't set a wolf to guard the sheep. (Don't let a robber watch the money). 我怀疑他的诚实，所以不要做出冒险的安排。

Many people realize that we get too soon old and too late smart. 许多人都可以体会到 "老的太快， 聪明太晚" 的道理。