Proverbs 14:8

8The wisdom of the prudent is to discern his way,
but the folly of fools is deceiving.

Ecclesiastes 9:10

10Whatever your hand finds to do, ado it with your might,
Or  finds to do with your might, do it
cfor there is no work or thought or knowledge or wisdom in Sheol, to which you are going.

Luke 14:28-32

28For which of you, desiring to build a tower, does not dfirst sit down and count the cost, whether he has enough to complete it? 29Otherwise, when he has laid a foundation and is not able to finish, all who see it begin to mock him, 30saying, ‘This man began to build and was not able to finish.’ 31Or what king, going out to encounter another king in war, will not esit down first and deliberate whether he is able with ten thousand to meet him who comes against him with twenty thousand? 32And if not, while the other is yet a great way off, he sends a delegation and asks for terms of peace.
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