Ecclesiastes 10:2

The heart of the wise [inclines] to his right, but the heart of the fool [inclines] to his left.

Proverbs 14:8

The wisdom of the clever is understanding his ways, but the folly of fools is deceit.

Proverbs 17:16

Why [is] this? A price in the hand of a fool, [in order] to buy wisdom where there is no {sense}.

Ecclesiastes 9:10

Whatever your hand finds to do--do [it] with [all] your might; for in Sheol--where you are going--no one works, plans, knows, or thinks about anything.

Ecclesiastes 10:10

If the ax is blunt but one does not sharpen its edge, {he must exert more effort}, but the advantage of wisdom [is] it brings success.

Ecclesiastes 10:14

The fool {talks too much}, for no one knows what will be. Who can tell anyone what will happen {in the future}?

Luke 12:18-20

And he said, 'I will do this: I will tear down my barns and build larger ones, and I will gather in there all my grain and possessions.

Luke 14:28-32

For which of you, wanting to build a tower, does not first sit down [and] calculate the cost [to see] if he has [enough] {to complete it}?

Treasury of Scripture Knowledge

Summary

Ecclesiastes 10:2

A wise man's heart is at his right hand; but a fool's heart at his left.

But

Ecclesiastes 10:10

Proverbs 17:16

Luke 12:18

General references

1 Kings 12:8

Bible References

But

If the ax is blunt but one does not sharpen its edge, {he must exert more effort}, but the advantage of wisdom [is] it brings success.

Why [is] this? A price in the hand of a fool, [in order] to buy wisdom where there is no {sense}.

And he said, 'I will do this: I will tear down my barns and build larger ones, and I will gather in there all my grain and possessions.

General references

But he rejected the advice of the old men, which they gave him, and he consulted with the youngsters who had grown up with him, who were {serving} before him.