1.  "I have never met a man so ignorant that I couldn't learn something from him." Galileo Galilei

2. A gerund is a verb that acts like a noun. To form a gerund, add –ing to the end of the verb.  To describe the purpose of something, use for + gerund: Example  What is this program for? This computer program is for editing videos.

3.  Be quiet! A library is for studying, not for socializing!

4.  An infinitive is the to + verb form. To describe the purpose of someone, use an infinitive. Examples  Why are you going to Toronto? I‘m going to Toronto to learn English  I use my lips to kiss!

5.  http://www.ego4u.com/en/cram-up/grammar/infinitive- gerund/exercises?04 http://www.ego4u.com/en/cram-up/grammar/infinitive- gerund/exercises?04  http://www.englishpage.com/gerunds/gerunds_infinitives_1. htm http://www.englishpage.com/gerunds/gerunds_infinitives_1. htm  http://www.ego4u.com/en/cram-up/grammar/infinitive- gerund/exercises?04 http://www.ego4u.com/en/cram-up/grammar/infinitive- gerund/exercises?04  http://www.englishpage.com/gerunds/gerunds_infinitives_1. htm http://www.englishpage.com/gerunds/gerunds_infinitives_1. htm