Knowledge is power.
Having knowledge gives one the ability to influence or control situations.

A little knowledge is a dangerous thing.
Having only a small amount of knowledge can lead to mistakes or overconfidence.

You can't put knowledge in a box.
Knowledge cannot be contained or limited; it expands beyond boundaries.

The more you know, the more you realize you don't know.
Increased knowledge often reveals the vastness of what is still unknown.

An ounce of prevention is worth a pound of cure.
It’s better to prevent problems than to solve them after they occur, emphasizing knowledge about risks.

Ignorance is bliss.
Sometimes, not knowing something can be more comfortable than knowing it.

Knowledge is like a garden; if it is not cultivated, it cannot be harvested.
Knowledge must be nurtured and used; otherwise, it will not be useful.

A wise man learns more from his enemies than a fool from his friends.
Intelligent individuals gain valuable insights from challenges and opposition.

A wise old owl.
Someone who is very knowledgeable and wise, often due to experience.

To know the ropes.
To understand how things work, especially in a specific situation.

In the know.
Being well-informed about a particular subject or situation.

The school of hard knocks.
Gaining knowledge and experience through difficult life experiences rather than formal education.

To have a head for something.
To have a natural ability or talent for understanding a particular subject.

To be on the same wavelength.
To have a shared understanding or knowledge about something.

To pick someone's brain.
To ask someone for advice or information, typically because they are knowledgeable about a subject.

To throw out the baby with the bathwater.
To discard something valuable along with the undesirable.

To learn the ropes.
To learn the basics of a job or activity.

The more, the merrier.
More knowledge or people involved leads to better outcomes.

To come to light.
When something becomes known or revealed.

To have one's ear to the ground.
To be well-informed or aware of what is happening around you.