invinitive as the subject of a sentence

[mirzaqulov]

"to take GMAT is a pain in the back."

here the verb form(infinitive)is acting as the subject of the sentence, but as i know, a verb cannot be the subject of a sentence.

except, for the sake of the parallelism, infinitive can be the subject of a sentence:
"to take GMAT without preparation is to go shopping without money."

nonetheless, i saw couple of sentences in which verb form(infinitives)(not gerund!)acted as the subject of the sentence.

Please experts, shed some light on this, Ron, Stacey?

[jnelson0612]

An infinitive can be the subject of a sentence, but this is less common than having a gerund act as the subject of a sentence.

There's some good information on this link: http://www.englishpage.com/gerunds/part_1.htm