"You can lead" joke

You can lead a horticulture, but you can`t make her think.

You can observe a lot just by watching.

You can`t expect to hit the jackpot if you don`t put a few nickles in the machine.

You can`t fall off the floor.

You can`t get here from there.

You can`t guard against the arbitrary.

You can`t outtalk a man who knows what he`s talking about.

You can`t push a rope.

You can`t tell how deep a puddle is until you step into it.

You can`t tell which way the train went by looking at the track.

You will remember that you forgot to take out the trash when the garbage truck is two doors away.