Understanding cannot be forced on someone who chooses to be ignorant.

To experiment in a haphazard or random manner with the hope that some amount of success may be encountered.

Alternative form of there are none so blind as those who will not see

Alternative form of raise the flag and see who salutes

Third-person singular simple present indicative form of send it up the flagpole and see who salutes

(humorous) Indicates the speaker has noticed an erection underneath the interlocutor's clothes.

Problems and losses that do not reach the attention cause no worries and no grief.

So as to see; using sight.

The state or quality of being all-seeing.

The quality of seeing; ability to see; sight.