Sky is the limit.
And how does sky has a limit? Actually, this is an English Proverb.
Meaning : Knowledge has no boundaries.
Don't be an egoistic person.
Be a learner.
Grab as many knowledge as you can get.
The more knowledgeable you are, the more powerful, respectful, wonderful person you are.
Pen is mightier than sword.
Knowledge is power.
With the presence of knowledge, you will be able to forge a sword, and use it in an appropriate way.
Without the presence of knowledge, the sword may not exist, or it may be used in a wrongful way.
Statement accepted.
Keep calm, and reach for the sky.
Keep calm, and reach for the Deans List.
Insya-Allah.