"What is mind? No matter. What is matter? Never mind."

"It is the characteristic of error to be feeble, fluctuating, and anxious: it is the property of truth to be constant …"

"...they make no use of tables; but only of the addition, subtraction, multiplication, and division of certain numbers…"

"[negative numbers] ‘…darken the very whole doctrines of the equations and make dark of the things which are in their …"

"The , which measures the , together with the total energy density of the Universe, sets the size of the observable Un…"

"We are at an interesting juncture in cosmology. With new methods and technology, the accuracy in measurement of the h…"

"... after finishing my postdoc, I became a faculty member at , and then ended up being the scientific leader of this …"

"It is time for Africa to begin thinking and operating as a stakeholder, rather than accepting the ‘victim mentality’ …"

"It’s unsustainable to depend on imports. A country depending on imported food cannot grow."

"Let us first invest in high-yielding varieties and bring in investors to put money into irrigation systems and soil f…"