KJV:
And I gave my heart to know wisdom, and to know madness and folly: I perceived that this also is vexation of spirit.
NASB:
And I set my mind to know wisdom and to know madness and folly; I realized that this also is striving after wind.
KJV:
The wise man's eyes are in his head; but the fool walketh in darkness: and I myself perceived also that one event happeneth to them all.
NASB:
The wise man's eyes are in his head, but the fool walks in darkness. And yet I know that one fate befalls them both.
KJV:
And who knoweth whether he shall be a wise man or a fool? yet shall he have rule over all my labour wherein I have laboured, and wherein I have shewed myself wise under the sun. This is also vanity.
NASB:
And who knows whether he will be a wise man or a fool? Yet he will have control over all the fruit of my labor for which I have labored by acting wisely under the sun. This too is vanity.
KJV:
I know that there is no good in them, but for a man to rejoice, and to do good in his life.
NASB:
I know that there is nothing better for them than to rejoice and to do good in one's lifetime;
KJV:
I know that, whatsoever God doeth, it shall be for ever: nothing can be put to it, nor any thing taken from it: and God doeth it, that men should fear before him.
NASB:
I know that everything God does will remain forever; there is nothing to add to it and there is nothing to take from it, for God has so worked that men should fear Him.
KJV:
Who knoweth the spirit of man that goeth upward, and the spirit of the beast that goeth downward to the earth?
NASB:
Who knows that the breath of man ascends upward and the breath of the beast descends downward to the earth?
KJV:
Better is a poor and a wise child than an old and foolish king, who will no more be admonished.
NASB:
A poor yet wise lad is better than an old and foolish king who no longer knows how to receive instruction.
KJV:
Keep thy foot when thou goest to the house of God, and be more ready to hear, than to give the sacrifice of fools: for they consider not that they do evil.
NASB:
Guard your steps as you go to the house of God and draw near to listen rather than to offer the sacrifice of fools; for they do not know they are doing evil.