Another proverb tells us that Fortune knocks at least once at every man’s
gate, but that does not necessarily mean that it will knock a second time, so
when an opportunity to do a thing on which you have set your heart does
suddenly arise you should take full advantage of it, for you may never get
another chance.

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* Gather ye rosebuds while ye may
* He that will not when he may, when he will he shall have nay
* He who hesitates is lost
* Hoist your sail when the wind is fair
* Life is short and time is swift
* Make hay while the sun shines
* Strike while the iron is hot
* There is a tide in the affairs of men …
* Time and tide wait for no man