All men dream, but not equally. Those who dream by night in the dusty recesses of their minds, wake in the day to find that it was vanity: but the dreamers of the day are dangerous men, for they may act on their dreams with open eyes, to make them possibl
- T. E. Lawrence
"On the tip of your tongue"
If a word is on the tip of your tongue, you know you know the word, but you just can't quite remember it at the moment.